Click here to visit the Dunkin’ Donuts site and signup for DD Perks using the code MCR at registration. After signing up, Dunkin’ Donuts will notify My Coke Rewards of your enrollment and your Bonus Points will automatically be credited to your My Coke Rewards account in 7 to 14 days. (I recommend signing up with the same email you use for My Coke Rewards so everything goes smoothly)
You can click here to more info
Image Credit: My Coke Rewards